Water-heater.



N0. 643,!00. I Patented Feb. 13, I900.

J. E. BANCRUFT.

WATER HEATER.

(Application filed Dec. 17, 1897.)

(N0 ModeL) mm Quid lam OFFICE JAMES E. BANCROFT, OF TOLEDO, OHIO, ASSIGN OR TO THE NATIONAL CEMENT AND RUBBER MANUFACTURING COMPANY, OF SAME PLACE.

WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 643,100, dated February 13, 1900.

Application filed December 17, 1897. $erial No. 662,244. (No model.)

To all whom it may concern.

Be it known that I, JAMES E. BANCROFT, of Toledo, county of Lucas, and State of Ohio, have invented certain new and useful Improvements in \Vater-I-Ieaters; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying draw ings, and to the figures of reference marked thereon, which form part of this specification.

My invention relates to a water-l1 eater, and has for one object to heat water for bath and other purposes,and is adapted to be connected to the water-supply pipe and heat the water as it passes through tubes or pipes arranged in zigzag coil within a housinghaving an enlarged chamber formed at the base, wherein a caloric medium may be located.

A further object is to construct the heater in segments and'secure the tube-sections of the heater to the return-bends or elbows by means of bolts, whereby the heater maybe quickly and easily taken apart.

A further object is to make the tubes or pipes ellipsoidal in cross-section, whereby the sectional area of water passing through the heater is decreased and the heating-surface increased.

In the drawings, Figure 1 is a side elevation of a water-heater constructed in accordance with my invention, showing the housing in cross-section. Fig. 2 is a cross-section through one of the ellipsoidal tubes on the line Y Y, Fig. 1; and Fig. 3 is alongitudinal section through one of the elbows and pipe, showing a telescopic union.

1 designates a housing wherein is located a coil 2, composing a plurality of tubes 3, which are secured to elbows 4 by means of bolts 5 engaging proj ectinglu gs 5-,which are integral with the body of the elbows and located upon the opposite sides and both ends thereof. The tubes 3 have formed at their ends 6 a projecting shoulder 7, and both ends of the returnbends or elbows are provided with interior seats adapted to receive the pipes or tubes 3 and forming thereby a union having a suitable gasket 10 interposed between the connection which is compressed by the tightening of the bolts 5 and forming thereby a wa tor-tight union. From the point of entrance into the housing the pipe continues inzigzag line until the top of the housing is reached and from whence it continues downwardly in the same form to the outlet 11. The tubes and elbows within the housing are made ellipsoidal or flattened in cross-section,as shown in Fig. 2, thereby reducing the area 12 and proportionally increasing the heating-surface of the tubes. The water flows through the tubes under a head or pressure, entering the zigzag coil through the connection 13. The base 14 of the housing is enlarged, and within this enlargement a caloric medium may be introduced, consisting of a gas-jet, Bunsen burner, or hydrocarbon-burner.

It being desirous to clean the interior of the ellipsoidal tubes from sedimental coating deposited thereon by the waterin its hotor cold state, the heater can be easily taken apart and such coatings or deposits removed from the interior of the tubes whenever desired. I may also provide a precipitation-chamber at the outlet of the heater, whereby the floating particles held in suspension by the water are caused to settle and form a deposit which can be easily removed.

\Vhat I claim is- 1. ,In a water-heater in which the inlet and outlet are located at the bottom of the heater, the combination of two vertical sets of zigzag conduits which comprise a series of tubes connected by elbows, the elbows of one side being arranged oppositely to the elbows of the other side, a water-inlet pipe communicating with the lower portion of one of the conduits, and an exit-pipe communicating with the lower portion of the other conduit, the two conduits being in communication at the top of the heater, substantially as described.

2. In a water-heater, the combination of a vertical series of tubes, elbows forconnecting the ends of the tubes, the elbows being provided with flanges and binding-rods passing through said flanges, and adapted to hold the elbows in operative position to said tubes, substantially as described.

In testimony that I claim the foregoing a my own I hereby aftix my signature in presence of two witnesses.

J AMES E. BANCROFT.

Witnesses:

WILLIAM WEBSTER, MAUD ScHUMAoHER. 

